You have a beautiful start!! I really like the different textured fabrics you are using. I can't wait to see more of this art piece!! :D:D:D
The only thing that jumps out to me is the mountain, maybe darken it up a little with crayons? To me it jumps out more than the rest of the picture.
Adding a darker strip to the eve of the roof that is up against the mountain, will help it not in blend as much into the mountains too. JMHO